A387138 - cp's OEIS frontend

A387138 Triangle read by rows: T(n, k) = binomial(n, k) * Product_{k=1..n} radical(k), where radical(n) is the product of distinct prime factors of n, cf. A007947.

n	a(n)
0	1
1	1
2	1
3	2
4	4
5	2
6	6
7	18
8	18
9	6
10	12
11	48
12	72
13	48
14	12
15	60
16	300
17	600
18	600
19	300
20	60
21	360
22	2160
23	5400
24	7200
25	5400
26	2160
27	360
28	2520
29	17640
30	52920
31	88200
32	88200
33	52920
34	17640
35	2520
36	5040
37	40320
38	141120
39	282240
40	352800
41	282240
42	141120
43	40320
44	5040

[1, 1, 1, 2, 4, 2, 6, 18, 18, 6, 12, 48, 72, 48, 12, 60, 300, 600, 600, 300, 60, 360, 2160, 5400, 7200, 5400, 2160, 360, 2520, 17640, 52920, 88200, 88200, 52920, 17640, 2520, 5040, 40320, 141120, 282240, 352800, 282240, 141120, 40320, 5040]

cp's OEIS Frontend

A387138 Triangle read by rows: T(n, k) = binomial(n, k) * Product_{k=1..n} radical(k), where radical(n) is the product of distinct prime factors of n, cf. A007947.

Table of values

List of values